Powder time fuse



July 3, 1928.

` H,- M. BRAYToN POWDER TIME'FUSE Aug, 5J

' INVENTOR H ar n ld FLETE BY A TTORNE Y Patented AJuly 3, 1928.

`ITAROLJJ MQ imAYTo'ii, or novum, yNEW JERSEY.

V*Appiiiiiiiioii inea August V5, 1924.. serial No. 730,294.

`r(GRANTED UNDR'THE Pnovisions or THE lAoTfor immens, 1383, 2'2 STAT. 16125.)

The V`invention v c lescribed herein, "m:1 y be Vmanufactured und used by or for the V'Grovernment for governmental purposeswit'hout [time fuse.

In high angle firing against nireraft the i variation in atmospheric pressure fis ia determining factorV in regulating the ventingfof the-gasesgenerated by the burningpowder ofthe time traini; As Ithe external pressurev is reduced, the gases nre vented ato more rapidY inte, thereby reducing theinternal pressure the 'fuse and vallowingthe vpowder .of tliet'iHl'Qt-rain toburn more rapidly.V 'On-V zi'oo'oun't ofy the' variations in'atmospheric pressure und the irregularity of the ooinbus- .tion of 'the powder time train, it followsthat afu'sefwllich isgdesigiied 4'and set to explode ai projectile sitter` thelfapse of@ predeter-- minedfintfe'ryzilfo time at'be's't bemerely In addition, by v'iiti'ie ofi the rapiditygof COmbustionof the" powder train and the rings.

itself allot the gses generated by theburningffpowfder train, thus creating uniform conditions 'withiny the f use regardless 'of'it- ',mospherie pressure The internal pressure..

Withinftlie use will be il fConstantly rising quantity and will Consequently z provide for..

' as lotver, combustion of thel powder train, thereby'permitting 4reduction to but a vsin- -y ya1itages are: to provide apowder time fuse i .10de Yrin LQiznii filage ofthis character. Y

ther equally important ob].eots `and ad- 01 to obtain thev burning time required l including .1i-novel` means for vobtaining gas i obturation without interferring with kthe rapid setting of the usegto, construct the setting meohnisnnfsogthat the tendenoy to tiine ring. :set-position i. toV .secure the fuse heatrisuiutinglining or..mini1nizing,the effeet oehanges .1n temprature;

l To theseiin other' ends, my Vinveiition;`

ing a part of this speoilicatiofn,

periphery.; 'The'.

Consists in the construction, arrztngement, and combination of elements, 'described/ here inater and pointed out in the claims for-m A.. practical embodiment v4of my invention is ill'ustri'ted in the a'ecompanying' 'drow/ings, in'whi'oh`, f

Fig. iii i longitudinal seciioiiiii ii'wbf. my improved `fuse; und i f rig. 2 ,is a similar view iihistia'iiiigpaii method' of Vorryi-ng out the {inven- Referring to the drawings by numerals fof reference: y

' According to 'the 'i'Iyention, I p ode a.: 'suitable fusecasing o'oinprisi'ng'r J body/10, formed Withjanannular flnge 11, on-:tfvhich is seoted a; hollow usefhea'd -o'rco'V'er l2. The body' is 'formed fiy'ith. gi'oofv'e T3 jin:

gifige registering groove' 16, 'on tlie' inside.. 0i the' @over iiiii 'thereby sei/'ves fio. h'oijd the coverinplace The uprlerjand lower 'surf-agees ofthe 'ring infested with man 'iifi'd initie iiiiijieiiai 17, sii-@ii eisigen,'Soiis01uiii,'oirubber 'teeffc't'ully Slealth ilt. i L

The body.is vformed with gsii'olcessi'on of connected irregular b'res eitending Centrally .thereofrom'froiitto rear and divided by theiinsertionoffa:dise18 'Wliilifis lcrimped iiito'pl'a'oe 'To the rear of the dise-18 isdafbooster 'dis'ofQL for preventing esape of the booster Charge. A1 pssage'-22, loded'witli acombustible material Wliih)in :iy' be Lprtion of the booster chargmextndsto afp'oyvder pellet 23,-, Wliieh'l is Edisposed lin reee'ssQin the forward? ee p tlie body 'djcent its Y se plug 20 m'ay befp'ro-y videdY with 'a' ailing here and the hpliisiiii! .ably olose'dr'by lthr'eagdedipin after assembly.

i The' lforufard fioe .ozlff the( body is covered by a l'elt Washer v24, on which vis vseated a 'time ring 25, 'formedyyithn vstem i526, the

jfreejend .of Whieli .threaded for the Yreception of. .zi..inut=V 27 .assembled fr oin the` Vrear andl adapted to 'rotatablyr the been.; Earibfeeiie 12, is 'atubul'ar'extension 29', and in the bot;Y

tomrof the well thus formed is a fixed `iiring vZfpin 30.` Afconcussion plunger assembly held Y in safelposition yat the mouth` of thefextension by a'resistance ring, 3l ,comprises a l5 plugr'32,a primerv carrier 33an`d a primer 34.VV A cap35,threaded and Vlocked tothe eX-- er vassern 'A flash duct'36 leads; from the'base of the extension 2 9 to a p owdertime train 53,7k disposed in an annular groove 38 inthe unl" der faceof the time ring.V A' vent B9, closed by a rupturable discA 40, leads from the' v'groovew Vinto the hollow cov',er and en-A ables all the gasesgenerated bythe burning vpowder train to passto and be vconfined V witl1in the' space inthe cover. Pressure within the cover will ,be constantly rising 'regardlessof the atmospheric pressure on the exterior of the fuserand thepowder in. the itim'e train' will be vconsumed -under condiv tension, revents dislacementofthel lun@- bl p 'p t tions whichf'are uniform for ally fuses.

When the powder time train is V.completely Y lconsumed,gthe flame passes to the pellet 23 "and than@ t0 'the booster, charge' 19 kin", the

bS'eof the'fuse.

' The fuse is. setiby. rotating the cover 12,

which througha `pin40',communicates its 1-2'Vth'e cover 1 2 is threaded tothe body' '1Q and Vseat/sfona ring V4 2 of any resilient' provided for, eifectually :i against` the ,wasl 1er, while the increase in' cap 43, slidably embracingvthe tubular 4j extension y295, is, formed with a stem 44, which movement'to anextension '41y on the time ring andthus the ring maybe turned'to anyl desired setting.A

I` the' modified form: illustrated Figsubstance `vwhich is protrudes through'the'nose ofthe fuse and;A

is a'da ted through Aa'jpin`45 toengage in a s'lotfo the extension to rotate 'the time ring p spr ng 4 8, embracing the tubular. eatension y29 and abutting the rim of the cap 43, io

.holds the vflange. of vthesetting stein `firmly Vvthe pressure within the cover actin on' the stem .also tends to leil'ectually seal t ie open-'" Vingand''obturate YtheygasesV v. Y, However insteadof threadedly connect# pressure ing the body. and the cover of the fuse-they Y may be joined ina manner identically to thatshown in Fig. l, in which case, if desired,

the' setting vs temf44maybe rigidwith ther cover. p

- Alining 49 of a suit-able heatinsulating material such as asbestos, may be held in place vin the fuse cover-by the time ring 25 for the purpose of' minimizing the,` effect of l changes' in atmospheric temperature as the projectile'mounts yto higher altitudes.

`Thilein the foregoingthere has beencillustratedv'and. described, 'such combination and arrangement of elements as' constitute the lpreferred femb'odiment'o my invention, it is nevertheless desired to emphasizey the fact that interpretation of the invention .embracing the vstem fand YAadapted' on set sion formed On lthe' forward face of the time ring, aY concussion plunger supported atfthe ventingdisplacement ofthe plunger.;

- 2. Av fuse including a'body, a hollow cover for the body, va rotatable time/rin carried Y by theV body, a; powderytrain @in 4 sai ring,v a.

tubular'extension vformed on the'time rmg and lprojecting into the cover,a ring'mechani sm f carried within the extension, a 4capped stem mounted kon the extension and protruding through the nose of the cover, fa', connection between the stem andthe time` ring Y VtwherebyV4 they may befrotated unison ,to

set-the fuse, a flange formed onlthelstem,

a resilient washerfinterposed betweenjthe fiiange and the c over,'and}atens1on element ,for 'holding the'iiange againstthewashen v VA fuse including a body, a hollow ycover the stem and the time ring wherebyfthey and 4the cover. j j

forthebody, a 'rotatable timering Acarried i f 'bythe bod aV tubular'e'xtension formed on Vthe time' r1ng,rav firing. mechanism carried by thejextension, av capped stem mounted fon" the'extension and protruding through-i115 the nose of Vthe' fusefa .connection between 'i ,may berotat-ed in unison to set the fuse, and Y Vmeans 'i'br sealingthe joint betweenthe stem 1 i forV thel body, ai rotatablev time. ringfcarried Y by' the body, ai' tubular eXtensjonjormed on l the: time 'ring, a@ iring mechanism Y' carried by the extension,v a :capped stem' mounted fuse.

setfthe Y y f V.130 i on the extensionv and protruding through i, thenoseofjthe cover, and la. connection rbe- 'tweenthe stem and the 'time ring wherebyA they maybe rotated 'in'unisonto i 5. A powder time fuse including a body, a. hollow cover secured to the body, a time ring, said ring formed with a stem for rotatably securing the ring to the body, a ring embracing t-hestem and adapted on set back to lock the time ring, said time ring being further Vformed with a. tubular extension projecting into the hollow cover and Y adapted to carry a firing mechanism. l()V 6. A powder time fuse including a casing,

a time ring, said ring Jformed with ar stem` for rotatably securing the ring to the casing,` and a firing mechanism carried on the opposite sideof the time ring.

y 7. A fuse including a body, said bodyv formed with a rearwardly converging cavity,

carried by the body, a powder train in said ring,rmeans for igniting the powder train, a

'hollowl cover for the body adapted to hold the gases of the powder train when consumed, and a stem protruding through the nose of the cover for setting the time ring, said stein having a greater tendency to 0bturate the gases as pressure in the coverincreases. i

9. An obturated powder-time fuse includs ing a rotatable and longitudinally movable setting-stem, said stem having la greater tendency to obtu'ratel gases as pressure in the fuse increases. c

10. Avpowder train Atime fuse including a casing, a single time ring carried by the casing," and a.` firing .mechanism mounted axially in the time ring.

,Y l1. A Apowder train time fuse including a casing, a time Aring rotatably carried thereby,

and an axially disposed setting sternjcon-l nected with said ring.

HAROLD M. BRAYTON. Y 

